Search found 1649 matches

by fredrosse
Mon Apr 06, 2020 8:11 am
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

"Would there be enough clearance for a 12x12 prop?" The software I have indicated the 12 x 12 prop (300mm x 300mm) at 500 RPM as approximately ideal, but the actual hull configuration is much more suited to a 9 or 10 inch (225 - 250mm) prop diameter, about 80% of the ideal diameter. No big sacrifice...
by fredrosse
Sun Apr 05, 2020 10:21 am
Forum: Welcome
Topic: old guy in Northern Indiana U.S.A.
Replies: 3
Views: 141

Re: old guy in Northern Indiana U.S.A.

Welcome to the forum. Having machine facilities is quite an asset, and directing your efforts to steam power, especially steam boating, is very rewarding. I spent about 5 years building a steam engine for my sidewheeler, very much part time work, at a very moderate cost. However an IC engine convers...
by fredrosse
Sat Apr 04, 2020 3:40 am
Forum: General Steamboat stuff
Topic: Pacific Lumber Ships
Replies: 3
Views: 108

Re: Pacific Lumber Ships

Thanks for that, an interesting history that filled my quarantined day.
by fredrosse
Wed Apr 01, 2020 9:12 pm
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

Previously mentioned, steam - electric drive using a trolling motor: Direct motor drive would have several efficiency penalties, if driving a typical trolling motor, and they use very inefficient propellers, propeller efficiency drops from around 60% efficient (for typical appropriate applications) ...
by fredrosse
Wed Apr 01, 2020 9:05 pm
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

The originally proposed hull, with a loaded displacement of 780 lbs (0.35 long tons, very close to 0.35 Metric tonne), can make 4 knots with propeller drive at 0.45 shaft horsepower (0.34 kW). Best arrangement is 500 RPM with a 12 x 12 propeller. These are rough numbers, I would think +/- 20%, but s...
by fredrosse
Sun Mar 29, 2020 4:47 pm
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

Scanoe steamer underwayImage

Please pardon my ignorance, how to post a picture on the forum?
by fredrosse
Sun Mar 29, 2020 4:40 pm
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

double post
by fredrosse
Sun Mar 29, 2020 4:36 pm
Forum: General Steamboat stuff
Topic: Antidote to Cabin Fever?
Replies: 21
Views: 368

Re: Antidote to Cabin Fever?

I made a car-top steamer several years ago, able to be setup with only one person. The boat was a 15 foot Coleman plastic square stern canoe, which fit on the roof rack of an automobile, no more than 50 pounds to be lifted by the person at any time during unloading, setup and launching. The steam pl...
by fredrosse
Thu Mar 26, 2020 2:46 pm
Forum: General Steamboat stuff
Topic: the History and Causes of Steamboat Explosions, 1839
Replies: 1
Views: 139

Re: the History and Causes of Steamboat Explosions, 1839

Interesting to read this document, especially to learn the prevailing steam pressures of the times, both "low pressure" steamboats, generating steam at around 5 - 10 PSIG, and "high pressure" steamers, generally popular on the USA western rivers, running in the vicinity of 50 PSIG. However these "lo...
by fredrosse
Thu Mar 12, 2020 3:13 pm
Forum: General Steamboat stuff
Topic: Steam yachts and launches 1887
Replies: 2
Views: 636

Re: Steam yachts and launches 1887

Great to have a look at this book. The Colt Firearms Steam Engine is a new one for me, made so similar to the six gun that made Colt famous. Instructions on how to operate a naptha launch engine is interesting, and far less complicated than I had imagined. And finally, statements about piston rings ...